Questions tagged [cipher]

A cipher is a simple method of modifying messages to make them unreadable, but still possible to recover. Common ciphers are Caesar, Vigenere, Atbash, and several types of substitution cipher. Other ciphers include polynomial ciphers such as Playfair, Foursquare, etc.

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7
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1answer
126 views

A little bit of encryption

A little selfmade encryption riddle: Whenever I'm searching for a solution, I have this feeling, like standing on a single point. While I take a step forward, I have the feeling I'm falling two ...
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320 views

Underworld Royalties

1. Mr. Edison's Travel Diaries From Liverpool, James Edison traveled to Valencia. After watching the scheduled match, he then traveled to Italia and then Amsterdam where he promised to return in ...
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1answer
150 views

How to solve this coding decoding puzzle? [closed]

If in a certain code language CMWAX is coded as 51525525. Then what is the code for CIPKZ? Any help will be highly appreciated. Thank you very much.
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Find the PSE user name

Hidden in the ciphertext below is a user name from puzzling.stack.exchange. Who is it? The intended answer uses all of the ciphertext, not just a snippet that happens to match somebody in some way. <...
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A weird cipher inside video game

Recently a game named "Ode to a Moon" released.... during the gameplay there are several cipher sentences flashing on the screen. I was trying to decode them as a cryptography amateur(noob),but still ...
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1answer
313 views

A periodic message

I was wandering around Washington, D.C., recently, not paying attention to where I was, thinking about codes and ciphers, when suddenly it hit me. No, really: a blast of wind blew a paper right into ...
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1answer
303 views

Need help with an online puzzle / riddle

I found this online riddle at m4tr1x.ws, but now I am stuck. It seems you need to gain deeper and deeper access to this virtual Matrix-style computer system. First you need to create an account via ...
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2answers
540 views

The Coded Chessboard

"If you're worthy, the secret is found within you," the wise old lady had told you before you had entered the villain's lair. When the townspeople had told you to seek her out for advice, you thought ...
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4answers
300 views

Defuse… It's going to blast!

You are an intelligent decoder. The FBI now needs your help to defuse a bomb. You move near it and find the following notes. You have a glance at the notes. You are now ready to decode and defuse.. ...
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A journey to find me

The task is to find a word which is mostly used as a symbol in Math and Physics. It is also a giant in space. Find the appropriate links from the below hints. The links (imgur- pages) will further ...
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1answer
134 views

My sports program

This is my daily sports program: First exercise: 1) Stand up 2) Got on your knees 3) Keep both arms on your body 4) Pause 5) Lean your body slightly to the left Second exercise: ...
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540 views

Ooohh, it all makes sense now! :D

Introduction As requested by @Rubio, I am here to state that this is a metapuzzle based on other puzzles listed below. "Ooohh, it all makes sense now! :D" ~ Mr Pie The Puzzle Or does it? Answer is ...
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2answers
286 views

Not Just Black and White

Answer for this puzzle is one word. Have fun! Highlighted parts are where I realised I have clued it wrong... Sorry for all this inconvenience! Hint: usefulness level 1 usefulness level 2 This ...
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291 views

What causes these signs to follow this relation?

Can you find why does the below relation hold true? Hint 1 Hint 2
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1answer
151 views

White and black, white and black?

Can you find what comes in place of $???$ Hint:
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1answer
103 views

Decipher this three times, periodically

After hanging around this site for a little while I finally decided to put together a cipher for my first puzzle. I hope you guys enjoy it. ...
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2answers
140 views

Decode the message

Try to decode this message: y08 700) 07734 Hint: Hint
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1answer
356 views

6x7 Pokemon-based cipher

My friend made this cipher for me to solve and it has me stumped. Wondered if anyone else would want to take a crack at it. All it is is this image: Names of the pokemon in order are (assuming I ...
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2answers
232 views

Decode this for the right answer

ABABAAABAAAABAABAABAABABBAABAAAAAAABAAAAABAAAAABBAAABBBBAABAAAAAAABBAAAABBAABABAAABAA This an encrypted text. You need to decrypt it and encrypt it again to get the right answer.
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232 views

Riddle to Code 2: The return of numbers

The first is a pirates favorite letter. The second is from a famous quote of shakespear. The third is squaring it off in a famous formula. The fourth is the first in a very well known song. ...
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1answer
213 views

Oops!!! Dropped it again!

I have dropped my laptop twice in the past and luckily nothing went wrong. Today while getting ready for college, I dropped it again - for the third time. This time, something is wrong. When I ...
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1answer
216 views

color coded puzzle

Help me solve this problem. As this site appreciates a little effort from the person who posted it. Here's my thought process: 1) The matrix starts with 0 ( gr, gr, gr). It has three places which can ...
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1answer
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Elementary, my dear …

My list for today Iodine-Sulfur+Americium-Scandium:Phosphorus Iodine-Titanium+Molybdenum+Thorium+Yttrium-Lithium:Helium Praseodymium+Oxygen+Vanadium+Erbium+Boron+Sulfur-Lithium:Aluminum ...
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2answers
244 views

Absent Employee's Password

You are the boss at an engineering firm. Recently a rather eccentric employee named Mr. Robemer made an abrupt exit when you accused him of devoting his worktime to his hobbies. Robemer stormed out ...
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1answer
115 views

Musical Chairs Cipher: Double Trouble

This question is a continuation of the first question: Musical Chairs Cipher. The basic rules: Six children -- Alice, Ben, Carl, Denise, Eddie, and Flo -- are playing a game of musical chairs in ...
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1answer
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Musical Chairs Cipher: Intermediate

This question is a continuation of the first question: Musical Chairs Cipher. The basic rules: Six children -- Alice, Ben, Carl, Denise, Eddie, and Flo -- are playing a game of musical chairs in ...
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3answers
534 views

A Salute to Poetry

In honor of National Poetry Day (which happens to be March 21st - go figure), I have crafted a puzzle which I hope will do a small bit of justice to this day. Carefully hidden in the four sections ...
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4answers
560 views

Baby don't hurt me no more

You've been taken captive by a spy organization who seems convinced you're an agent for the other side. You've already spent a miserable day of questioning and torture and have no wish to spend ...
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2answers
121 views

Musical Chairs Cipher

Six children -- Alice, Ben, Carl, Denise, Eddie, and Flo -- are playing a game of musical chairs in class. On each of the five chairs is written a seven letter word. The children start out in ...
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1answer
140 views

Cricket or Cipher?

Congrats Bass for finding the answer of Find this Cricket terminology Find the names of three Cricket stadiums from the below codes: 1. dy30q7i 2. 23jgo36 3. 5y39fqo
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1answer
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Where is Steve?

Steve is a modern painter. He and his brother live in England. Today his brother found him missing. He searched everywhere, but couldn't find Steve. But in Steve's room, he found the below painting. ...
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1answer
612 views

Find my name from this list of symbols

From the symbols below, find my name? # ! # @ * @ & \$ ^ # * # \$ #
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1answer
165 views

Hiker's Cabin Mystery | Pt. IX

You are starting to feel a strange affinity towards this mysterious hiker as you head over to (Answer to Part VIII) as per his instruction. As you walk inside, you notice a man standing at the ...
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1answer
98 views

Some music sheet to decode

Find the word that was encoded in this music sheet: (No instrument is required)
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1answer
2k views

A married couple

Disclaimer: This puzzle is from a university in Israel, computer science. Its in a real document written in Hebrew so no point in posting it. There is no link to it on the internet. There is a couple ...
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1answer
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Hiker's Cabin Mystery | Pt. VIII

Part VII is still up for grabs! At last! You've solved the mystery of the cards! Now that you've gotten into the hiker's computer in the hotel room, it's time to explore! Good news! There is only ...
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1answer
120 views

Pentagon chipher

Please help! Its a swedish scoutcipher.
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109 views

Beginner CryptoGram - Msgs From Your Puzzle Community

I like simple ciphers. Here is one, no tricks, alpha-numeric substitutions only:
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388 views

Find the celestial body

Last week, a group of 5 astronauts went on a space-tour. They accidentally got crashed on a celestial body in space. Luckily no one was harmed! They were amazed to see some highly intelligent aliens ...
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1answer
140 views

Hiker's Cabin Mystery | Pt. VI

The only part that doesn't have an answer yet is Part II! Chop, chop! You finally are able to get out of the airport after quickly solving the mystery. You are becoming quite the detective! Only... ...
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2answers
236 views

Find the cipher used

Each of the following lines were said by various famous personalities. Each line corresponds to one person. There is no relation between these lines. After obtaining the names of these people, A 6 ...
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416 views

Hiker's Cabin Mystery | Pt. III

See Part I | See Part II | See Part IV Finally, you've gained access to his files... but the filenames are all encrypted! Oh, no! You only have one chance to open the files! Which one should you ...
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1answer
147 views

The “Jumbled” Cipher

The elusive "Jumbled" cipher has stumped scientists and cryptographers alike... Not really, but it will stump you soon... The Jumbled Cipher is a mysterious text cipher that puts text into an ...
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1answer
155 views

Mutineer's Treasure

Background: Your team has recovered a sunken ship. In the hold there is a small room that appears it was intended as a smuggler's room. In the smuggler's hold are three decayed corpses a bunch of ...
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1answer
368 views

Is it a word? Really?

Grandpa says: show that the following number equals a 5 letter word with multiple meanings (one of them not good) I I I X I I X I I X I I I X I I X I I I was wondering if that silly thing ...
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1answer
138 views

This is my cipher

Solve the following: Ujlw oz vi ovdwui, Ncep hs ob xuuo, T'yz miamy hfid ujlw, Htu etr sqp eiic. Hint: Hint 2: Hint 2a: Hint 2b: Hint 2c: Hint 2d:
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Hiker's Cabin Mystery

See Part II | See Part III On a hiking trip, you find a piece of paper on the desk of an abandoned cabin: Also on this desk is an old-fashioned computer that is, unfortunately, password-protected. ...
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1answer
386 views

The Librarian's Labyrinth - Part III

"This Library is HUGE!," You say aloud. You hear your voice echoing through the halls and nothing else. How could this be? Who comes here? You start examining the books on the shelves. It's just your ...
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192 views

Just a Simple Number Crossword

I made a small number crossword for my mathletes club that I thought I'd share. It's not too hard, I think it's just right for a coffee break. Have fun! (Edit: No answer has a leading zero)
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586 views

History Calls - Twice!

You'd send a letter to me, but I'm not quite what you think. You'd send a letter in me, but only if you didn't know me. I was a gem in my day for being both bold and precise. I stood ...